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US 4,338,852 AGranted
Bump stop for trunnion-mounted weapon
AssigneeThe United States of America as represented by the Secretary of the Army
InventorRichard L. Jarvis
Life of this patent
Estimating the term…
Abstract
A bump stop for a trunnion-mounted weapon that includes a torsion bar shock bsorber carried by the receiver portion of the weapon for absorbing shock loads as the weapon nears the limits of its upward and downward motion. The bump stop is advantageously characterized by compactness, high energy-absorbing capacity, durability, insensitivity to temperature or other environmental variations, and usability in two directions, up and down.
Claims6
In a trunnion-mounted weapon that includes a receiver adapted to swing in the elevational plane between stationary stops:
- the improvement comprising a torsion bar shock absorber carried by the receiver for resiliently absorbing shock loads as the receiver nears the limits of its swing motion;
- said shock absorber comprising a tube rotatably mounted on the receiver for motion around an axis parallel to the receiver swing axis, a striker arm carried by the tube for engagement with the aforementioned stationary stops to impart rotary motion to the tube, torsion bar means located within the tube, a first anchor means interconnecting one end of the torsion bar means and the receiver, and a second anchor means interconnecting the other end of the torsion bar means and the corresponding end of the tube, the shock absorber being constructed so that shock is transmitted from the striker arm to the tube, thence through the second anchor means to the torsion bar means.
Dependencies are inferred from the claim text.